Panasonic WH-SDC03H3E5 Service Manual page 52

Further tighten the flare nut with torque
wrench in specified torque as stated in the
table.
Spanner or
Wrench
Piping size (Torque)
Gas
ø12.7 mm (1/2") [55 N•m]
Liquid Refrigerant Pipe Gas Refrigerant Pipe
Do not over tighten, over tightening cause water leakage.
Please take extra precaution when open the control board cover
and control board for indoor unit installation and servicing. Failure
to do so may cause injury.
CUTTING AND FLARING THE PIPING
1. Please cut using pipe cutter and then remove
the burrs.
2. Remove the burrs by using reamer. If burrs is
not removed, gas leakage may be caused.
Turn the piping end down to avoid the metal
powder entering the pipe.
3. Please make flare after inserting the flare nut
onto the copper pipes.
Pipe
Reamer
Point down
Clamp handle
1. To cut 2. To remove burrs
■ ■
Improper flaring
Inclined Surface CrackedUneven
damaged thickness
Torque wrench
Liquid
ø6.35 mm (1/4") [18 N•m]
CAUTION
CAUTION
Handle
0 – 0.5 mm
Bar
Bar
Yoke
Core
Red arrow mark
3. To flare
When properly flared, the internal surface
of the flare will evenly shine and be of even
thickness. Since the flare part comes into
contact with the connections, carefully check
the flare finish.
11.1.4.5

Fix the drain elbow and packing to the bottom of
indoor unit, as shown in below illustration.

Use inner diameter 17 mm drain hose in the
market.

This hose must to be installed in a continuously
downward direction and in a frost-free
environment.

Guides this hose's outlet to outdoor only.

Do not insert this hose into sewage or drain pipe
that may generate ammonia gas, sulfuric gas, etc.

If necessary, use hose clamp to further tighten the
hose at drain hose connector to prevent leakage.

Water will drip from this hose, therefore the outlet
of this hose must be installed in an area where the
outlet cannot become blocked.
Drain Elbow
11.1.4.6

Connect a drain hose to the pressure relief valve
hose outlet.

This hose must to be installed in a continuously
downward direction and in a frost-free
environment.

Guides this hose's outlet to outdoor only.

Do not insert this hose into sewage hose or
cleaning hose that may generate ammonia gas,
sulfuric gas, etc.

If necessary, use hose clamp to further tighten the
hose at drain hose connector to prevent leakage.

Water will drip from this hose, therefore the outlet
of this hose must be installed in an area where the
outlet cannot become blocked.
Copper
pipe
52
Drain Elbow and Hose
Installation
Packing
Pressure Relief Valve Drainage
Pipework
Pressure relief valve
hose outlet